ios: don't accept first responder if Qt::WindowDoesNotAcceptFocus

Change-Id: I01801648a1971444e0727e1bf0790cb3a0d0aad5
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>

src/plugins/platforms/ios/qioswindow.mm

@@ -145,6 +145,9 @@ void QIOSWindow::setVisible(bool visible)
 
 bool QIOSWindow::shouldAutoActivateWindow() const
 {
+    if (![m_view canBecomeFirstResponder])
+        return false;
+
     // We don't want to do automatic window activation for popup windows
     // that are unlikely to contain editable controls (to avoid hiding
     // the keyboard while the popup is showing)

src/plugins/platforms/ios/quiview.mm

@@ -194,7 +194,7 @@
 
 - (BOOL)canBecomeFirstResponder
 {
-    return YES;
+    return !(m_qioswindow->window()->flags() & Qt::WindowDoesNotAcceptFocus);
 }
 
 - (BOOL)becomeFirstResponder